Stream-line high-pressure radiator



Sept. 69 A. H. HART STREAM LINE HIGH PRESSURE RADIATOR Filed Nov. 9, 1926 gwuento'c A H. Haz'i Patented Sept. 6, 1927.

. T T F AUSTIN H. HART, or GREENWICH, CONNECTICUT. ASSIGNOR To ROME RADIATION COMPANY, INCORPORATED, or ROME, New YORK.

STREAM-LINE HIGH-dPRESSURE RADIATOR.

Application filed November 9, 1926. Serial 1N0. 147,353.

This invention relates to improvements in heat exchange devlces of the radiator type in which a plurality of sections are pr'ov1ded with apertures and are suitably connected to 5 form built-up heating units of any desired size.

Radiators now in common use are no adapted for use in heating systems requiring a working pressure in excess of fifty pounds. Where higher temperatures than those ava1l able from rpdiators incapable of withstanding pressures beyond fifty pounds, are required, it has been necessary heretofore to resort to coils of piping capable of withstanding the increased pressures involved in obtaining the higher temperatures.

The object of the present invention 15 to overcome this disability of the radiator type of heaters, by providing sections shaped and reinforced by heat radiating fins so as to adapt these sections and the units built therefrom to operate atany desired pressure and temperature.

Other objects of the invention will appear as the detailed description thereof proceeds.

In the drawing, Fig. 1 is an end elevation of a radiator section constructed in accordance with my invention.

Fig. 2 is a side elevation of the same. Fig. 3 is a plan view of the said section. As shown in the drawing, the radiator section is made up of a pair of plates 1 and 201'" sheet metal, preferably brass, suitably secured together at their edges 3 and 4, as

' by electric welding to form a conducting passageway for the heating fluid circulating through the radiator.

The sheetsof each. section are so shaped 40 that when they are securedtogether, the form a section having one end 5 thereof semicylindrical and with the sides extending therefrom and tapering gradually to meet in a sharp straight edge 6. Each end of a section is provided with the usual bushing inserts 7 set in each section as closely as possible to the cylindrical end of the section.

In order to provide additional radiating to surfaces, each radiator section is provided with a plurality of heat radiating fins 8,

completely encircling a section and provided with flanges 9 extending at right angles to the body of each fin. Ascle'arly shown at Fig. 3 each fin'8 is stamped out to fit with a snug friction fit over the central, parts of the section. The flanges 9 keep the fins 8 always perpendicular to the surfaces of the sections 1 and consequently prevent the fins 8 from buckling when pressure is applied to the inside of the section.

The bushings 7 are set in each end part 10 as closely as practicable to the cylindrical end 5 in Order to feed the heating fluid directly to the larger end of the section. In

i order to strengthen the end parts 10 which for obvious reasons cannot be provided with the reinforcing fins 8, these parts are .curved sharply inward from the edge 6 to extend concentrically around their bushings 7.

It will be obvious from the drawing that these fins 8- not only greatly increase the heat radiating areas of the sections but also serve as strong reinforcing bands which adapt the sections for use at any desired pressure and temperature, and thereby obviate the necessity for usingpipe coils for heating purposesrequiring pressures of greater than fifty pounds. It will be further obvious that the greater the pressure in each section, the more tightly will the'fins be held at their positions thereon.

Having thus described iny invention, what I claim as new and desire to secure by United States Letters Patent is A radiator section for heating systems adapted to be subjected to pressures above fifty pounds and comprising a pair of brass plates having their edges welded together and shaped to form, when so welded,.a flat tube with substantially parallel side walls and closed ends,- and a plurality of fins spaced apart lengthwise on and supported wholly by said'tube, each fin being provided with a flange shaped to contact in close sliding friction fit with the periphery of said tube and adapted to hold its fin perpendicular to said tube.

In testimony whereof I efiix my signature.

AUSTIN H. HART. 

